A film phantom for routine film dosimetry in the clinical environment.

This paper describes a new film phantom we have designed that eliminates many of the problems found in phantoms used in film dosimetry. This phantom employs two sheets of solid water attached with nylon hinges and aligned with pins. It is made light-impermeable through the use of nylon hook-and-loop fasteners. This new design shows good agreement with ion-chamber measurements over the full depth of electron penetration.